Pen case



FIG. 1 is a perspective view of a pen case showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a front view thereof in an opened state;

FIG. 9 is a plan view thereof in the opened state;

FIG. 10 is a bottom view thereof in the opened state;

FIG. 11 is a right side view thereof in the opened state; and,

FIG. 12 is a perspective view thereof in the opened state.

CLAIM The ornamental design for a pen case, as shown and described.